They are contraindicated in women with active or recent hormone-sensitive cancers, in pregnancy, and in several specific medical conditions
Solution: Rely on reputable compounding pharmacies or clinics known for stringent quality standards and third-party testing
Results depend on how low your levels are and how long they've been dropping
References, Journal of the American Board of Family Medicine, 2020, " Effectiveness of oral versus intramuscular administration of vitamin B12 for treating vitamin B12 deficiency Brito, A., Habeych, E., Silva-Zolezzi, I., Galaffu, N
Mercado-MonroyJFalfn-CortsRNMuz-PrezVMGmez-AldapaCACastro-RosasJ
mitochondrial health